I’ve played the game for a total of 42 minutes in the car and while I was having a lot of fun at first I got completely stuck around level 20. The fact that it costs money to unlock the merges keeps you from getting past level 20 in my experience. I appreciate that there are no ads and it is a very fun game to sit back and play while listening to music. If the unlocks for merges were cheaper or if you didn’t have to buy them at all I would keep playing. Good game and good job to the dev!